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Add a pthread cancel stub for sigwait, following Onno van der Linden's 

analysis in PR 45131.  Kindly tested by Hisashi T Fujinaka (using csup
as the test case) with a successful outcome.

OK martin@
This commit is contained in:
agc 2012-04-04 06:29:16 +00:00
parent fd3bb38e58
commit 76f4f39125
1 changed files with 27 additions and 2 deletions
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29
lib/libpthread/pthread_cancelstub.c
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@ -1,4 +1,4 @@
/* $NetBSD: pthread_cancelstub.c,v 1.35 2011/04/22 14:18:34 joerg Exp $ */
/* $NetBSD: pthread_cancelstub.c,v 1.36 2012/04/04 06:29:16 agc Exp $ */
/*-
* Copyright (c) 2002, 2007 The NetBSD Foundation, Inc.
@ -33,7 +33,7 @@
#undef _FORTIFY_SOURCE
#include <sys/cdefs.h>
__RCSID("$NetBSD: pthread_cancelstub.c,v 1.35 2011/04/22 14:18:34 joerg Exp $");
__RCSID("$NetBSD: pthread_cancelstub.c,v 1.36 2012/04/04 06:29:16 agc Exp $");
#ifndef lint
@ -58,6 +58,7 @@ __RCSID("$NetBSD: pthread_cancelstub.c,v 1.35 2011/04/22 14:18:34 joerg Exp $");
#include <sys/uio.h>
#include <sys/wait.h>
#include <aio.h>
#include <errno.h>
#include <fcntl.h>
#include <mqueue.h>
#include <poll.h>
@ -577,6 +578,7 @@ __sigtimedwait50(const sigset_t * __restrict set, siginfo_t * __restrict info,
pthread_t self;
int retval;
struct timespec tout, *tp;
if (timeout) {
tout = *timeout;
tp = &tout;
@ -591,6 +593,28 @@ __sigtimedwait50(const sigset_t * __restrict set, siginfo_t * __restrict info,
return retval;
}
int
sigwait(const sigset_t * __restrict set, int * __restrict sig)
{
pthread_t self;
int saved_errno;
int new_errno;
int retval;
self = pthread__self();
saved_errno = errno;
TESTCANCEL(self);
retval = ____sigtimedwait50(set, NULL, NULL);
TESTCANCEL(self);
new_errno = errno;
errno = saved_errno;
if (retval < 0) {
return new_errno;
}
*sig = retval;
return 0;
}
__strong_alias(_close, close)
__strong_alias(_fcntl, fcntl)
__strong_alias(_fdatasync, fdatasync)
@ -608,6 +632,7 @@ __strong_alias(_pread, pread)
__strong_alias(_pwrite, pwrite)
__strong_alias(_read, read)
__strong_alias(_readv, readv)
__strong_alias(_sigwait, sigwait)
__strong_alias(_write, write)
__strong_alias(_writev, writev)